Canon ELPH/IXUS can refer to the following:

• Canon's Digital ELPH/IXUS
  Canon Digital IXUS
  The Digital IXUS is a series of digital cameras released by Canon. It is a line of ultracompact cameras, originally based on the design of Canon's IXUS/IXY/ELPH line of APS cameras....
  
   series of cameras
• The Canon ELPH/IXUS
  Canon ELPH (series)
  The Canon ELPH series includes several popular compact point and shoot cameras built between 1996 and 2002.-File Format:...
  
   series of APS cameras
• The original Canon ELPH/IXUS
  Canon ELPH (camera)
  The Canon ELPH was a full-featured compact Advanced Photo System point and shoot camera released in May 1996 as part of a series.-Features:The first camera in the ELPH series was sold in Japan as the IXY and in Europe as the IXUS...
  
   camera introduced in 1996

Elph name
The name 'Elph' appeared in both mixed case and upper case in earlier Elph cameras, but recent cameras have standardized on upper case only, leading some to erroneously believe 'ELPH' refers to the acronym for Electronic Physics. In actuality, it is a combination of the word 'elf' (for a camera that is small and magical) and the word 'photograph.' Besides being memorable marketing, the use of a non-standard spelling of 'elf' makes it a defensible trademark

Trademark

A trademark, trade mark, or trade-mark is a distinctive sign or indicator used by an individual, business organization, or other legal entity to identify that the products or services to consumers with which the trademark appears originate from a unique source, and to distinguish its products or...

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